Old game, same tricks
This is a game that originally came out in 2008 on the Xbox Arcade, which should be abundantly clear the moment you boot it up. The game works, it looks okay, but there are many other better shmups available. I'd rate it lower but I don't think there's anything broken about the game, it's just lacking in features and variety.
You play as a small ship acting like a white blood cell destroying foreign bodies in a cell. And that's it. The only reason to keep playing it is score attack. The power ups don't last long and have little impact. Unless you get it in a bundle, I wouldn't pick this up by itself, or you desperately need a new shmup.